Self-energizing seals and methods of making and using same

Abstract

A seal includes an annular jacket including a body including a heel, a first lip, and a second lip, the heel, the first lip, and the second lip defining an annular recess oriented downwardly along a central axis, where the first lip is substantially parallel to the central axis, and the second lip is substantially parallel to the central axis. Wherein the second lip comprises an angled portion adjacent the heel and a planar portion adjacent the angled portion, where the angled portion forms an angle alpha with a line perpendicular to the central axis, where alpha is between 30 DEG and 90 DEG, where the heel has an axial length LH, where the first lip has an axial length LFL, and where LH < = 3 LFL.

Description

Technical Field

[0001] The present disclosure relates to seals, and more particularly to annular seals, or seals adapted to be disposed under pressure conditions. Background Art

[0002] Seals are used in environments where fluids (liquids, gases, slurries, etc.) are separated from each other. Typically, these seals must exhibit minimal leakage under stringent pressure requirements over a wide temperature range. Typically, in applications, seals experience wear and leakage problems during cycling from low fluid pressure and temperature to high fluid pressure and temperature. Typically, an energizer is used to provide the sealing contact force required for these applications; however, these energized seals can be expensive and require careful handling. Alternatively, in some cases, these seals can be self-energizing, which do not require an energizing element (e.g., a spring); however, they may not provide the wear and leakage performance required in certain applications. Accordingly, there continues to be an industrial need for improved seals that can withstand a wider range of pressure and temperature conditions while maintaining operational effectiveness in terms of contact force, contact area, and ultimately leakage performance over time. Summary of the Invention

[0003] Embodiments herein may include a seal including: an annular jacket including a body having a heel, a first lip, and a second lip, the heel, the first lip, and the second lip defining an annular recess oriented downwardly along a central axis, wherein the first lip is substantially parallel to the central axis, wherein the second lip includes an angled portion adjacent the heel and a planar portion adjacent the angled portion, wherein the angled portion forms an angle α with a line perpendicular to the central axis, wherein α is between 30° and 90°, and wherein the heel has an axial length L H , FL , H , , FL ,

[0005] , ,

[0004] , wherein the first lip has an axial length L FL , and wherein L H ≤3L FL .

[0004] Embodiments herein may include a seal assembly including: a first member; a second member; and a seal disposed between the first member and the second member, the seal including: an annular jacket including a body having a heel, a first lip, and a second lip, the heel, the first lip, and the second lip defining an annular recess oriented downwardly along a central axis, wherein the first lip is substantially parallel to the central axis, and wherein the heel is adapted to deform downwardly along the central axis to form an angle β with a line perpendicular to the central axis, wherein β is greater than 3°.

[0005] Embodiments of the present disclosure may include a seal assembly that includes an annular jacket having a body that includes a heel, a static first lip, and a dynamic second lip, the heel, the static first lip, and the dynamic second lip defining an annular recess that is oriented downwardly along a central axis, wherein the first lip is substantially parallel to the central axis, wherein the contact force of the second lip against the moving shaft measured after completion of Test 1 is in the range of between about 1 N / mm and about 25 N / mm, and wherein the wear length on the second lip measured after completion of Test 1 is greater than about 0.1 mm and less than about 2.5 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The embodiments are shown by way of example and are not intended to be limited to the drawings.

[0007] Figure 1A Cross-sectional perspective view of a seal including an embodiment.

[0008] Figure 1B Cross-sectional perspective view of a seal including an embodiment.

[0009] Figure 1C Perspective view of a seal including an embodiment.

[0010] Figure 2 Cross-sectional perspective view of a seal assembly including an embodiment.

[0011] Figure 3A Illustrates a first iteration of a seal design formed and under strain after being introduced into a component according to an embodiment.

[0012] Figure 3B Illustrates a second iteration of a seal design formed and under strain after being introduced into a component according to an embodiment.

[0013] Figure 3C Illustrates a third iteration of a seal design formed and under strain after being introduced into a component according to an embodiment.

[0014] Figure 3D Illustrates a fourth iteration of a seal design formed and under strain after being introduced into a component according to an embodiment.

[0015] Figure 3E Illustrates a fifth iteration of a seal design formed and under strain after being introduced into a component according to an embodiment.

[0016] Figure 4A Illustrates within a seal assembly at ambient temperature according to various embodiments Figures 3A to 3EGraph of the contact force (N) of the seal over time (h).

[0017] Figure 4B Illustrates the Figures 3A to 3E contact area (mm 2 ) of the seal within the sealing assembly at ambient temperature over time (h).

[0018] Figure 5A Illustrates the Figures 3A to 3E contact force (N) of the seal within the sealing assembly at ambient temperature over time (h).

[0019] Figure 5B Illustrates the Figures 3A to 3E contact area (mm 2 ) of the seal within the sealing assembly at ambient temperature over time (h).

[0020] Those skilled in the art should understand that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be enlarged relative to other elements to help improve the understanding of the embodiments of the present invention. Detailed Description

[0021] The following description in conjunction with the drawings is provided to assist in understanding the teachings disclosed herein. The following discussion will focus on the specific embodiments and implementations of the teachings. This focus is provided to assist in describing the teachings and should not be construed as a limitation on the scope or applicability of the teachings. However, other embodiments may be used based on the teachings disclosed in this application.

[0022] The term "comprising," "including," "having," or any other variant thereof is intended to cover non-exclusive inclusion. For example, a method, article, or apparatus that includes a series of features is not necessarily limited to those features but may include other features not expressly listed or inherent to such method, article, or apparatus. Further, unless expressly stated to the contrary, "or" means inclusive or, and not exclusive or. For example, the condition A or B is satisfied by any of the following: A is true (or present) and B is false (or absent), A is false (or absent) and B is true (or present), and both A and B are true (or present).

[0023] Additionally, the terms "a" or "an" are used to describe the elements and components described herein. This is done merely for convenience and to give a general sense of the scope of the invention. This description should be understood to include one, at least one, or the singular, and also the plural, or vice versa, unless clearly indicated otherwise. For example, when a single item is described herein, more than one item may be used in place of the single item. Similarly, in cases where more than one item is described herein, a single item may replace the more than one item.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The materials, methods, and examples are illustrative only and not intended to be limiting. To the extent not described herein, many details regarding specific materials and processing actions are conventional and can be found in textbooks and other sources within the art of seals.

[0025] Figures 1A to 1B A cross-sectional perspective view of a seal is shown in accordance with multiple embodiments. Figure 1C A perspective view of a seal is illustrated in accordance with multiple embodiments. First, referring to FIG. 1, a seal 100 according to some embodiments described herein generally may include a jacket 102. The jacket 102 may be annular about a central axis 190. The jacket 102 may include a body 104 having a heel 116, a first lip 112, and a second lip 114. In one embodiment, the body 104 may include an inner wall 105 that may define an annular recess 106.

[0026] In multiple embodiments, the seal 100 may be a self-energizing seal (i.e., not including a spring or an energizer). Under load conditions, the jacket 102 may self-energize to deform in the radial direction. Accordingly, the lips 112, 114 of the jacket 102 may provide an outward force against adjacent components within the assembly (e.g., a first member and a second member, respectively).

[0027] The seal 100 can be formed from any suitable material in the field of seals. In one specific embodiment, the seal 100 can at least partially comprise a polymer. The polymer can be selected from the group consisting of: polyketone, polyaramide, polyphenylene sulfide, polyethersulfone, polysulfone, polyamideimide, ultra-high molecular weight polyethylene, fluoropolymer, polybenzimidazole, polyacetal, polybutylene terephthalate (PBT), polypropylene (PP), polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), polyethylene terephthalate (PET), polyimide (PI), polyetherimide, polyetheretherketone (PEEK), polyethylene (PE), polysulfone, polyamide (PA), polyphenylene ether, polyphenylene sulfide (PPS), polyurethane, polyester, liquid crystal polymer (LCP), elastomer, or any combination thereof. The polymer can be a thermoplastic or thermosetting polymer. In one embodiment, the jacket 102 can comprise a fluoropolymer, or even consist essentially of a fluoropolymer. Exemplary fluoropolymers include polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), polyvinylidene fluoride (PVDF), perfluoroalkoxy (PFA), a terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride (THV), polychlorotrifluoroethylene (PCTFE), ethylene tetrafluoroethylene copolymer (ETFE), ethylene chlorotrifluoroethylene copolymer (ECTFE), or any combination thereof. Other fluoropolymers, polymers, and blends can be included in the composition of the jacket 102. In another specific embodiment, the seal 100 can at least partially comprise polyethylene (PE) such as ultra-high molecular weight polyethylene (UHMWPE), or even consist essentially of it. In another specific embodiment, the seal 100 can comprise a thermoplastic elastomer hydrocarbon block copolymer, polyether-ester block copolymer, thermoplastic polyamide elastomer, thermoplastic polyurethane elastomer, thermoplastic polyolefin elastomer, thermoplastic vulcanizate, olefin-based copolymer, olefin-based terpolymer, polyolefin plastomer, or a combination thereof. In one embodiment, the seal 100 can include a styrene-based block copolymer, such as styrene-butadiene, styrene-isoprene, blends or mixtures thereof, etc. Exemplary styrenic thermoplastic elastomers include triblock styrenic block copolymers (SBC), such as styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS), styrene-ethylene-butylene-styrene (SEBS), styrene-ethylene-propylene-styrene (SEPS), styrene-ethylene-ethylene-butadiene-styrene (SEEBS), styrene-ethylene-ethylene-propylene-styrene (SEEPS), styrene-isoprene-butadiene-styrene (SIBS), or a combination thereof. Commercial examples include some grades of Kraton TM and Hybrar TMResin. In one embodiment, the seal 100 may include an elastomer that comprises at least one of the following: acrylonitrile-butadiene (NBR), carboxylated nitrile (XNBR), ethylene acrylate (AEM, ), ethylene propylene rubber (EPR, EPDM), butyl rubber (IIR), chloroprene rubber (CR), fluorocarbon (FKM, FPM), fluorosilicone (FVMQ), hydrogenated nitrile (HNBR), perfluoroelastomer (FFKM), polyacrylate (ACM), polyurethane (AU, EU), silicone rubber (Q, MQ, VMQ, PVMQ), tetrafluoroethylene-propylene (FEPM). In multiple embodiments, the seal 100 may be formed by any conventional method known for polymer manufacturing, such as injection molding or CNC machining.

[0028] In one embodiment, the seal 100 may be treated, impregnated, filled, or coated with a lubricating material. Exemplary lubricating materials include molybdenum disulfide, tungsten disulfide, graphite, graphene, expanded graphite, boron nitride, talc, calcium fluoride, or any combination thereof. Additionally, the lubricating material may include aluminum oxide, silicon dioxide, titanium dioxide, calcium fluoride, boron nitride, mica, wollastonite, silicon carbide, silicon nitride, zirconium oxide, carbon black, pigments, or any combination thereof.

[0029] In one embodiment, the seal 100 may at least partially comprise metal. According to certain embodiments, the metal may include iron, copper, titanium, tin, aluminum, their alloys, or may be another type of metal. In one embodiment, the seal 100 may contain metals (such as aluminum, zinc, copper, magnesium, tin, platinum, titanium, tungsten, iron, bronze, steel, energizer steel, stainless steel), metal alloys (including the listed metals), anodized metals (including the listed metals), or any combination thereof.

[0030] As described above, the seal 100 may include a jacket 102. The jacket 102 may include a plurality of lips 112, 114 that define an annular recess 106. In one specific example, the lips 112 and 114 may extend from a heel 116 of the body 104. In one specific embodiment, the lips 112 and 114 may extend from the heel 116 in generally the same direction relative to each other. In one embodiment, the first lip 112 may be radially external to the second lip 114 (e.g., the second lip 114 forms the outer diameter of the seal 100). In another specific embodiment, the lips 112 and 114 may extend parallel to each other. In one embodiment, the first lip 112 may be substantially parallel to the central axis 190. In one embodiment, the second lip 114 may include an angled portion and a planar portion as described below. In an optional embodiment, either or both of the lips 112 and 114 may include a turned lip (not shown) that is adapted to provide a scraping interface for sealing abrasive or viscous materials or environmental components such as dust, debris, and environmental fluids. In one specific embodiment, the heel 116 may be fixed to a hardware (e.g., valve housing or shaft) to prevent the seal 100 from rotating relative to the hardware within the assembly.

[0031] In one embodiment, the heel 116 of the jacket 102 may be generally straight or planar. The heel 116 may include an outer surface portion 116a and an inner surface portion 116b. That is, the heel 116 may be disposed generally along a plane having minimal surface undulations and deviations. In a more specific embodiment, the heel 116 of the jacket 102 may be planar. As described in more detail below, the planar or generally planar heel 116 of the jacket 102 may facilitate improved contact between adjacent seals, thereby providing better sealing characteristics. In various embodiments, the heel 116 may have a straight or polygonal cross-section. In various embodiments, the heel 116 may have an arcuate cross-section. In various embodiments, the heel 116 may be oriented generally perpendicular to at least one of the first lip 112 or the second lip 114 along the central axis 190. In various embodiments, the heel 116 may have a straight or polygonal portion adjacent to the first lip 112. In various embodiments, the heel 116 may have an arcuate portion adjacent to the first lip 112. In various embodiments, the heel 116 may have a straight or polygonal portion adjacent to the second lip 114. In various embodiments, the heel 116 may have an arcuate portion adjacent to the second lip 114.

[0032] In one embodiment, at least one of the lips 112 and 114 may include a straight or planar shape. In one embodiment, at least one of the lips 112 and 114 may include an arcuate shape. As Figures 1A to 1CAs shown, in one embodiment, the first lip 112 may include a generally straight outer surface portion 112a and an arcuate end portion 112c. As Figures 1A to 1C shown, in one embodiment, the first lip 112 may include a generally straight inner surface portion 112b that defines the recess 106 and an arcuate inner portion 112d that is adjacent to the inner surface 116 of the heel 116.

[0033] As Figures 1A to 1C shown, in one embodiment, the second lip 114 may include a generally straight outer surface portion 114a that may include a first inclined surface portion 114a' (i.e., an angled portion) and a second inclined surface portion 114a'' (i.e., a planar portion) adjacent to the first inclined surface portion 114a' (i.e., the angled portion). The second lip may also include a straight end portion 114c. As Figure 1A shown, the first inclined surface portion 114a' may include a step 114a'a. The step 114a'a may be substantially parallel to the central axis 190. The step 114a'a may interface with the outer surface of the heel 116 along a shoulder 114a'b. As Figures 1A to 1C shown, in one embodiment, the second lip 114 may include a generally straight inner surface portion 114b that defines the recess 106 and an arcuate inner portion 114d that is adjacent to the inner surface 116b of the heel 116. In one embodiment, the entire second lip 114 may be straight.

[0034] As Figures 1A to 1B shown, the first inclined surface 114a' of the second lip 114 may form an angled portion that meets and intersects the outer surface 116a of the heel 116 at an angle α, where α may be less than 90°, such as less than 75°, such as less than 60°, such as less than 45°, or such as less than 30°. In one embodiment, α may be between 30° and 90°. It should also be understood that α can be any value between any of the above minimum and maximum values. The first inclined surface 114a' (i.e., the angled portion) may also intersect the second inclined surface 114a'' (i.e., the planar portion).

[0035] In one embodiment, the outer portion of the first lip 112 may have a radius of curvature R FE . As Figures 1A to 1B shown, the radius of curvature R FE may be formed on the end portion 112c of the first lip 112. In multiple embodiments, the outer portion of the first lip 112 may have a radius of curvature R FE , which may be positive. In multiple embodiments, the outer portion of the first lip 112 may have a radius of curvature R FE, the radius of curvature can be greater than 0.1 mm, such as greater than 0.5 mm, such as greater than 1 mm, such as greater than 2 mm, such as greater than 5 mm, such as greater than 10 mm, such as greater than 20 mm, such as greater than 25 mm, such as greater than 50 mm, such as greater than 100 mm or such as greater than 200 mm. In multiple embodiments, the outer portion of the first lip 112 can have a radius of curvature R FE , which can be negative. In multiple embodiments, the outer portion of the first lip 112 can have a radius of curvature R FE , the radius of curvature can be less than -0.1 mm, such as less than -0.5 mm, such as less than -1 mm, such as less than -2 mm, such as less than -5 mm, such as less than -10 mm, such as less than -20 mm, such as less than -25 mm, such as less than -50 mm, such as less than -100 mm or such as less than -200 mm. It should also be understood that the outer portion of the first lip 112 can have a radius of curvature R FE , the radius of curvature can be any value between any of the above minimum and maximum values. It is also understood that the outer portion of the first lip 112 can have a radius of curvature R FE , the radius of curvature can vary along its circumference and length.

[0036] In one embodiment, the inner portion of the first lip 112 can have a radius of curvature R FI . As Figures 1A to 1B shown, the radius of curvature R FI can be formed on the inner part 112d of the first lip 112. In multiple embodiments, the inner portion of the first lip 112 can have a radius of curvature R FI , which can be positive. In multiple embodiments, the inner portion of the first lip 112 can have a radius of curvature R FI , the radius of curvature can be greater than 0.1 mm, such as greater than 0.5 mm, such as greater than 1 mm, such as greater than 2 mm, such as greater than 5 mm, such as greater than 10 mm, such as greater than 20 mm, such as greater than 25 mm, such as greater than 50 mm, such as greater than 100 mm or such as greater than 200 mm. In multiple embodiments, the inner portion of the first lip 112 can have a radius of curvature R FI , which can be negative. In multiple embodiments, the inner portion of the first lip 112 can have a radius of curvature R FI , the radius of curvature can be less than -0.1 mm, such as less than -0.5 mm, such as less than -1 mm, such as less than -2 mm, such as less than -5 mm, such as less than -10 mm, such as less than -20 mm, such as less than -25 mm, such as less than -50 mm, such as less than -100 mm or such as less than -200 mm. It should also be understood that the inner portion of the first lip 112 can have a radius of curvature R FI, the radius of curvature can be any value between any of the above-mentioned minimum and maximum values. It is also understood that the inner portion of the first lip 112 can have a radius of curvature R that can vary along its circumference and length. FI .

[0037] In one embodiment, the outer portion of the first lip 114 can have a radius of curvature R. FS . In various embodiments, the outer portion of the second lip 114 can have a radius of curvature R. FS , which can be positive. In various embodiments, the outer portion of the second lip 114 can have a radius of curvature R. FE , and the radius of curvature can be greater than 0.1 mm, such as greater than 0.5 mm, such as greater than 1 mm, such as greater than 2 mm, such as greater than 5 mm, such as greater than 10 mm, such as greater than 20 mm, such as greater than 25 mm, such as greater than 50 mm, such as greater than 100 mm or such as greater than 200 mm. In various embodiments, the outer portion of the second lip 114 can have a radius of curvature R. FS , which can be negative. In various embodiments, the outer portion of the second lip 114 can have a radius of curvature R. FS , and the radius of curvature can be less than -0.1 mm, such as less than -0.5 mm, such as less than -1 mm, such as less than -2 mm, such as less than -5 mm, such as less than -10 mm, such as less than -20 mm, such as less than -25 mm, such as less than -50 mm, such as less than -100 mm or such as less than -200 mm. It should also be understood that the outer portion of the second lip 114 can have a radius of curvature R. FS , and the radius of curvature can be any value between any of the above-mentioned minimum and maximum values. It is also understood that the outer portion of the second lip 114 can have a radius of curvature R that can vary along its circumference and length. FS .

[0038] In one embodiment, the inner portion of the second lip 114 can have a radius of curvature R. FT . As Figures 1A to 1B shown, the radius of curvature R FT can be formed on the inner part 114d of the second lip 114. In various embodiments, the inner portion of the second lip 114 can have a radius of curvature R. FT , which can be positive. In various embodiments, the inner portion of the second lip 114 can have a radius of curvature R. FT, the radius of curvature can be greater than 0.1 mm, such as greater than 0.5 mm, such as greater than 1 mm, such as greater than 2 mm, such as greater than 5 mm, such as greater than 10 mm, such as greater than 20 mm, such as greater than 25 mm, such as greater than 50 mm, such as greater than 100 mm or such as greater than 200 mm. In various embodiments, the inner portion of the second lip 114 can have a radius of curvature R FT , which can be negative. In various embodiments, the inner portion of the second lip 114 can have a radius of curvature R FT , the radius of curvature can be less than -0.1 mm, such as less than -0.5 mm, such as less than -1 mm, such as less than -2 mm, such as less than -5 mm, such as less than -10 mm, such as less than -20 mm, such as less than -25 mm, such as less than -50 mm, such as less than -100 mm or such as less than -200 mm. It should also be understood that the inner portion of the second lip 114 can have a radius of curvature R FI , the radius of curvature can be any value between any of the above minimum and maximum values. It is also understood that the inner portion of the second lip 114 can have a radius of curvature R that can vary along its circumference and length FT .

[0039] In one embodiment, the cavity formed by the annular recess 106 along the inner surface 105 of the first lip 112, the second lip 114 and the heel 116 can have a radius of curvature RC C . In various embodiments, the cavity can have a radius of curvature RC C , which can be positive. In various embodiments, the cavity can have a radius of curvature RC C , the radius of curvature can be greater than 0.1 mm, such as greater than 0.5 mm, such as greater than 1 mm, such as greater than 2 mm, such as greater than 5 mm, such as greater than 10 mm, such as greater than 20 mm, such as greater than 25 mm, such as greater than 50 mm, such as greater than 100 mm or such as greater than 200 mm. In various embodiments, the cavity can have a radius of curvature RC C , which can be negative. In various embodiments, the cavity can have a radius of curvature RC C , the radius of curvature can be less than -0.1 mm, such as less than -0.5 mm, such as less than -1 mm, such as less than -2 mm, such as less than -5 mm, such as less than -10 mm, such as less than -20 mm, such as less than -25 mm, such as less than -50 mm, such as less than -100 mm or such as less than -200 mm. It should also be understood that the cavity can have a radius of curvature RC C , the radius of curvature can be any value between any of the above minimum and maximum values. It can also be understood that the cavity can have a radius of curvature R that can vary along the length of its inner surface 105 FT .

[0040] In one embodiment, the jacket 102 may have an axial length L of at least 0.1 mm, at least 0.5 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm J The jacket 102 may have a length L that is not greater than 2000 mm, not greater than 1500 mm, or not greater than 1000 mm J In multiple embodiments, the jacket 102 may have a length L that is between 0.1 mm and 600 mm J It should also be understood that the jacket 102 may have a length L that can be any value between any of the above minimum and maximum values J It is also understood that the jacket 102 may have a length L that varies along its circumference J In multiple embodiments, the jacket 102 may have a length L that can be the same as the total length L of the seal 100 itself S same length L J .

[0041] In one embodiment, the jacket 102 may have a radial width W of at least 0.1 mm, at least 0.5 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm J The jacket 102 may have a width W that is not greater than 2000 mm, not greater than 1500 mm, or not greater than 1000 mm J In multiple embodiments, the jacket 102 may have a width W that is between 0.1 mm and 600 mm J It should also be understood that the jacket 102 may have a width W that can be any value between any of the above minimum and maximum values J It is also understood that the jacket 102 may have a width W that varies along its circumference J In multiple embodiments, the jacket 102 may have a width W that can be the same as the total width W of the seal 100 itself S same width W J .

[0042] In one embodiment, the first lip 112 may have an axial length L of at least 0.1 mm, at least 0.3 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm FL。The first lip 112 may have a length L that is not greater than 1500 mm or not greater than 1000 mm FL 。In various embodiments, the first lip 112 may have a length L that is between 0.1 mm and 300 mm FL 。It should also be understood that the first lip 112 may have a length L that can be any value between any of the above minimum and maximum values FL 。It is also understood that the first lip 112 may have a length L that varies along its circumference FL 。

[0043] In one embodiment, the first lip 112 may have a radial width W of at least 0.01 mm, at least 0.1 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm FL 。The first lip 112 may have a width W that is not greater than 1500 mm, not greater than 1000 mm FL 。In various embodiments, the first lip 112 may have a width W that is between 0.1 mm and 30 mm FL 。It should also be understood that the first lip 112 may have a width W that can be any value between any of the above minimum and maximum values FL 。It is also understood that the first lip 112 may have a width W that varies along its circumference FL 。

[0044] In one embodiment, the first lip 112 may have a ratio of length L to width W of at least 2:1, such as 3:1, such as 4:1, such as 5:1, such as 10:1, such as 12:1, such as 15:1, such as 25:1 or such as 50:1 FL to width W FL 。It should also be understood that the first lip 112 may have a ratio of length L to width W that can be any value between any of the above minimum and maximum values FL to width W FL 。It is also understood that the first lip 112 may have a ratio of length L to width W that varies along its circumference FL to width W FL 。

[0045] In one embodiment, the second lip 114 may have an axial length L of at least 0.1 mm, at least 0.3 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm SL。The second lip 114 may have a length L that is not greater than 1500 mm or not greater than 1000 mm SL 。In various embodiments, the second lip 114 may have a length L that is between 0.1 mm and 300 mm SL 。It should also be understood that the second lip 114 may have a length L that can be any value between any of the above minimum and maximum values SL 。It is also understood that the second lip 114 may have a length L that varies along its circumference SL 。

[0046] In one embodiment, the second lip 114 may have a radial width W of at least 0.01 mm, at least 0.1 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm SL 。The second lip 114 may have a width W that is not greater than 1500 mm or not greater than 1000 mm SL 。In various embodiments, the second lip 114 may have a width W that is between 0.1 mm and 30 mm SL 。It should also be understood that the second lip 114 may have a width W that can be any value between any of the above minimum and maximum values SL 。It is also understood that the second lip 114 may have a width W that varies along its circumference SL 。

[0047] In one embodiment, the second lip 114 may have a ratio of length L to width W of at least 2:1, such as 3:1, such as 4:1, such as 5:1, such as 10:1, such as 12:1, such as 15:1, such as 25:1 or such as 50:1 SL to width W SL 。It should also be understood that the second lip 114 may have a ratio of length L to width W that can be any value between any of the above minimum and maximum values SL to width W SL 。It is also understood that the second lip 114 may have a ratio of length L to width W that varies along its circumference SL to width W SL 。In various embodiments, as shown in FIG. 1, the widths of the two lips 112, 114 may be different

[0048] In one embodiment, the heel 116 may have an axial length L of at least 0.1 mm, at least 0.2 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mmH 。The heel portion 116 may have a length L that is not greater than 1500 mm or not greater than 1000 mm H 。In various embodiments, the heel portion 116 may have a length L that is between 0.1 mm and 300 mm H 。It should also be understood that the heel portion 116 may have a length L that can be any value between any of the above minimum and maximum values H 。It is also understood that the heel portion 116 may have a length L that varies along its circumference H 。

[0049] In one embodiment, the heel portion 116 may have a radial width W of at least 0.1 mm, at least 0.5 mm, at least 1 mm, at least 5 mm, at least 10 mm, at least 25 mm, at least 50 mm, at least 75 mm, at least 100 mm, at least 150 mm, at least 250 mm, at least 500 mm H 。The heel portion 116 may have a width W that is not greater than 1500 mm or not greater than 1000 mm H 。In various embodiments, the heel portion 116 may have a width W that is between 0.5 mm and 40 mm H 。It should also be understood that the heel portion 116 may have a width W that can be any value between any of the above minimum and maximum values H 。It is also understood that the heel portion 116 may have a width W that varies along its circumference H 。

[0050] In one embodiment, the first lip 112 may have a ratio of the length L of the heel portion 116 of at least 2:1, such as 3:1, such as 4:1, such as 5:1, such as 10:1, such as 12:1, such as 15:1, such as 25:1, or such as 50:1 FL to the length L H 。It should also be understood that the first lip 112 may have a ratio of the length L of the heel portion 116 that can be any value between any of the above minimum and maximum values FL to the length L H 。It is also understood that the first lip 112 may have a ratio of the length L of the heel portion 116 that varies along its circumference FL to the length L H 。In one particular embodiment, L H ≤ 3L FL 。

[0051] Figure 2 Cross-sectional perspective view of a seal assembly according to one embodiment. Although Figure 2An axially oriented seal 200 is shown, but the seal 200 can be oriented in any possible orientation, including a radial orientation or a face seal orientation. The seal 200 can have the same components as listed above with respect to FIG. 1 and is correspondingly labeled with 200’s instead of 100’s. As Figure 2 shown, the seal 200 can be placed axially downward between a first member 202 and a second member 204 within a seal assembly 2000 along a central axis 290. The first member 202 can be a housing. The second member 204 can be a shaft. At least one of the first member 202 or the second member 204 can be actuated relative to the seal 200 or at least one of the other of the first member 202 or the second member 204. The actuation can be rotational, radial, or axial movement. In one embodiment, within the seal assembly, at least one of the first lip 212 or the second lip 214 can be static while the other of the first lip 212 or the second lip 214 can be dynamic. In a specific embodiment, the first lip 212 abuts statically against the housing 202 while the second lip 214 abuts dynamically against the shaft 204. Additionally, the first member 202 can be made of a material having different material properties or mechanical properties (such as a different coefficient of expansion than the second member 204, or vice versa).

[0052] In multiple embodiments, the seal 200 can be assembled within the seal assembly 2000. As shown, the seal 200 can expand to fit within the members 202, 204. In multiple embodiments, Figure 2 a second configuration can be illustrated, which can show seal deformation of the seal 200, as described in further detail below. As Figure 2 shown, the second lip 214 can be deformed to include an arcuate outer surface and / or an arcuate inner surface. As Figure 2 shown, the heel 216 of the seal 200 can be deformed and form an angle β with a line perpendicular to the central axis 290. In multiple embodiments, β can be at least 1°, such as at least 2°, such as at least 3°, such as at least 4°, such as at least 5°, such as at least 6°, such as at least 7°, such as at least 8°, such as at least 9°, or such as at least 10°. In multiple embodiments, β can be less than 45°, such as less than 30°, such as less than 20°, such as less than 10°, or such as less than 5°. In one embodiment, β can be greater than 3°. It should also be understood that β can be any value between any of the above minimum and maximum values.

[0053] Seal 100 may be adapted for long-term use at elevated pressures or below elevated pressures within sealing assembly 2000. In one embodiment, seal 100 may have a desired leakage rate at these pressure values. In various embodiments, within these assemblies, the cyclic pressure may be greater than 100 MPa, such as greater than 200 MPa, such as greater than 500 MPa or such as greater than 750 MPa. In various embodiments, within these assemblies, the cyclic pressure may be less than 500 MPa, such as less than 250 MPa, such as less than 200 MPa, less than 150 MPa, less than 100 MPa, less than 50 MPa, less than 10 MPa, less than 1 MPa, less than 0.5 MPa, less than 0.3 MPa or less than 0.1 MPa. It should also be understood that the cyclic pressure may be any value between any of the above minimum and maximum values.

[0054] Seal 100 may be adapted for long-term use at elevated temperatures or below elevated temperatures within sealing assembly 2000. In one embodiment, seal 100 may have a desired leakage rate at these temperature values. In various embodiments, within these assemblies, the temperature may be greater than 25 °C, such as greater than 50 °C, such as greater than 100 °C or such as greater than 150 °C. In various embodiments, within these assemblies, the cyclic pressure may be less than 50 °C, such as less than 25 °C, such as less than 0 °C, less than -25 °C or less than -50 °C. It should also be understood that the temperature may be any value between any of the above minimum and maximum values.

[0055] Seal 200 may provide a biasing contact force F against at least one of first member 202 or second member 204 S . Specifically, seal 200 may provide a biasing force F against at least one of first member 202 or second member 204 S . In one specific embodiment, seal 200 may provide a biasing force F against at least one of first member 202 or second member 204 S , which biasing force may be at least 0.001 N / mm, such as at least 0.01 N / mm. In another embodiment, biasing force F S may be less than 5000 N / mm, such as less than 1000 N / mm, such as less than 500 N / mm, less than 400 N / mm, less than 300 N / mm, less than 200 N / mm, less than 100 N / mm, less than 50 N / mm, less than 25 N / mm or even less than 10 N / mm. In various embodiments, seal 200 may provide a biasing force F against at least one of first member 202 or second member 204 that is between 0.3 N / mm and 150 N / mm S . In various embodiments, the biasing force F against first member 202 Smay be different from the biasing force F against the second member 204 Ss .

[0056] The seal 200 may have a contact area on at least one of the first member 202 or the second member 204. In one specific embodiment, the seal 200 may have a contact area on at least one of the first member 202 or the second member 204 that is at least 0.1% of the total area of the seal 200. In another embodiment, the contact area on at least one of the first member 202 or the second member 204 is at least 0.1% of the total area of the seal 200, such as at least 0.5% of the total area of the seal 200, such as at least 1%, such as at least 2.5%, such as at least 5%, such as at least 10%, such as at least 15%, such as at least 20%, such as at least 25%, such as at least 30%, such as at least 35%, such as at least 40%, such as at least 45%, such as at least 50%, such as at least 55%, such as at least 60%, such as at least 65%, such as at least 70%, such as at least 75% or such as at least 80%.

[0057] The seal 200 may have a first lip 112 that has a contact area on at least one of the first member 202 or the second member 204. In one specific embodiment, the first lip 112 may have a contact area on at least one of the first member 202 or the second member 204 that is at least 0.1% of the total surface area of the first lip 112. In another embodiment, the contact area of the first lip 112 on at least one of the first member 202 or the second member 204 is at least 0.1% of the total surface area of the first lip 112, such as at least 0.5% of the total surface area of the first lip 112, such as at least 1%, such as at least 2.5%, such as at least 5%, such as at least 10%, such as at least 15%, such as at least 20%, such as at least 25%, such as at least 30%, such as at least 35%, such as at least 40%, such as at least 45%, such as at least 50%, such as at least 55%, such as at least 60%, such as at least 65%, such as at least 70%, such as at least 75% or such as at least 80%. The seal 200 may have a first lip 112 that has a contact area on at least one of the first member 202 or the second member 204. In one specific embodiment, the first lip 112 may have a contact area on at least one of the first member 202 or the second member 204 that is at least 0.1% of the total surface area of the first lip 112. In one embodiment, the first lip 112 may have a contact area CA 2 between 0.01 mm 2 and 3000 mm FL .

[0058] In another embodiment, the contact area of the first lip 112 on at least one of the first member 202 or the second member 204 is at least 0.1% of the total surface area of the first lip 112, such as at least 0.5% of the total surface area of the first lip 112, such as at least 1%, such as at least 2.5%, such as at least 5%, such as at least 10%, such as at least 15%, such as at least 20%, such as at least 25%, such as at least 30%, such as at least 35%, such as at least 40%, such as at least 45%, such as at least 50%, such as at least 55%, such as at least 60%, such as at least 65%, such as at least 70%, such as at least 75% or such as at least 80%.

[0059] The seal 200 may have a second lip 114 that has a contact area on at least one of the first member 202 or the second member 204. In one specific embodiment, the second lip 114 may have a contact area on at least one of the first member 202 or the second member 204 that is at least 0.1% of the total surface area of the second lip 114. In another embodiment, the contact area of the second lip 114 on at least one of the first member 202 or the second member 204 is at least 0.1% of the total surface area of the second lip 114, such as at least 0.5% of the total surface area of the second lip 114, such as at least 1%, such as at least 2.5%, such as at least 5%, such as at least 10%, such as at least 15%, such as at least 20%, such as at least 25%, such as at least 30%, such as at least 35%, such as at least 40%, such as at least 45%, such as at least 50%, such as at least 55%, such as at least 60%, such as at least 65%, such as at least 70%, such as at least 75% or such as at least 80%. The seal 200 may have a second lip 114 that has a contact area on at least one of the first member 202 or the second member 204. In one specific embodiment, the second lip 114 may have a contact area on at least one of the first member 202 or the second member 204 that is at least 0.1% of the total surface area of the second lip 114. In one embodiment, the second lip 114 may have a contact area CA 2 between 0.01 mm 2 and 3000 mm SL .

[0060] In another embodiment, the contact area of the second lip 114 on at least one of the first member 202 or the second member 204 is at least 0.1% of the total surface area of the first lip 112, such as at least 0.5% of the total surface area of the first lip 112, such as at least 1%, such as at least 2.5%, such as at least 5%, such as at least 10%, such as at least 15%, such as at least 20%, such as at least 25%, such as at least 30%, such as at least 35%, such as at least 40%, such as at least 45%, such as at least 50%, such as at least 55%, such as at least 60%, such as at least 65%, such as at least 70%, such as at least 75% or such as at least 80%.

[0061] Test 1 is the measurement of the contact force of the second lip 214 of the seal against the moving shaft 204 when the seal 200 is installed in the annular space between the first member 202 and the second member 204. Test 1 consists of a cyclic sequence to be performed under defined conditions (during Test 1, the contact force is not monitored). To perform Test 1, the seal may have an initial inner diameter between 13.5 mm and 14.6 mm and an initial outer diameter between 17 mm and 21 mm. The annular space may have a groove that accommodates the seal such that the seal can be installed in the groove. The shaft 204 moves linearly in a reciprocating manner over a total distance of 80 km at a speed between 0.01 m / s and 0.03 m / s, while the seal 200 is fully exposed to a pressure difference between 0 MPa and 0.3 MPa by a fluid (deionized water) at room temperature. The first member 202 is made of a machined polyoxymethylene (POM) polymer, and the second member 204 is made of ceramic and has an outer diameter of 14.6 mm and a surface finish equivalent to 0.04 μm. After completion of the sequence, the seal is removed and placed on a workbench to measure the frictional force (shaft actuation). While the seal 200 is held in place, the frictional force required to actuate the shaft is recorded by means of a load cell connected to the shaft, where the maximum value is recorded during one cycle of shaft movement (dry conditions, no pressure, speed 0.03 m / s, stroke 10 mm). The contact force is expressed in N / mm circumference and is calculated based on the measured frictional force divided by the coefficient of friction (0.1) characterizing the contact between the seal 200 and the shaft 204 and the dynamic seal circumference. After completion of Test 1, the seal 200 is removed, and the width of the "wear band" caused by the movement of the shaft 204 is measured on the seal 200. This is visually measured under a microscope on the outer side of the dynamic lip 214. The "wear band" is the width of the visual surface damage / wear caused by the shaft 204 sliding against the dynamic lip 214. In a plurality of embodiments, according to Test 1, the seal 200 may have a contact force of the second lip 204 against the moving shaft 204 in the range of between approximately 1 N / mm and approximately 25 N / mm measured after completion of Test 1 and a wear length on the second lip 214 greater than approximately 0.1 mm and less than approximately 2.5 mm measured after completion of Test 1.

[0062] The seal 100 can form a component that can be used in bidirectional pressure applications. The seal 100 can be oriented in the forward axial direction and prevent fluid leakage in the forward axial direction, or the seal 100 can be oriented in the backward axial direction and prevent fluid from leaking downward along the central axis 190 in the backward axial direction. The seal 100 can be oriented in the inward direction and prevent fluid leakage in the inward direction, or the seal 100 can be oriented in the outward direction and prevent fluid from leaking in the outward direction along a direction perpendicular to the central axis 190. In this regard, the seal 100 can be selected to have specific characteristics that permit effective sealing in those specific orientations. Particularly suitable applications include valves, pistons, two-way couplings, and other movable components where sealing is required between them.

[0063] The seals described according to the embodiments herein can allow the components of the seal to have a longer life due to an appropriately applied contact force that reduces the repeated compression and stress of the self-energizing seal caused by vibration or actuation of the seal or other components within the assembly. Additionally, the seals described according to the embodiments herein can prevent seal deformation under low-cycle pressure and temperature and high-cycle pressure and temperature cycling while maintaining sufficient contact force between the sealing area and the hardware. Accordingly, the life of the components and the seal itself can be increased, and overall leakage can be reduced. Further, the self-energizing seals according to the embodiments herein may be less expensive, more robust in handling, and produce performance similar to that of conventional energized seals.

[0064] Embodiment

[0065] Figure 3A Illustrated is a first iteration of a seal design that is formed after being introduced into an assembly and is under strain. As Figure 3A shown, in this embodiment, the seal 300A exhibits strong strain when placed within the assembly. Figure 3B Illustrated is a second iteration of a seal design that is formed after being introduced into an assembly and is under strain. As Figure 3B shown, in this embodiment, the seal 300B exhibits slightly reduced strong strain compared to the Figure 3A seal. Figure 3C Illustrated is a third iteration of a seal design that is formed after being introduced into an assembly and is under strain. As Figure 3C shown, in this embodiment, the seal 300C exhibits slightly reduced strong strain compared to the Figure 3B seal. Figure 3D Illustrated is a fourth iteration of a seal design that is formed after being introduced into an assembly and is under strain. AsFigure 3D As shown, in this embodiment, seal 300D exhibits slightly reduced strong strain compared to the Figure 3C seal. Figure 3E Illustrates a fifth iteration of a seal design that is formed after being introduced into a component and is under strain. As Figure 3E shown, in this embodiment, seal 300E exhibits slightly reduced strong strain compared to the Figure 3D seal. As shown, the seal designs according to the embodiments herein are optimized to provide optimal strain when placed within a sealed component.

[0066] Figure 4A Illustrates a graph of the contact force (N) of the Figures 3A to 3E seal within a sealed component over time (h) at ambient temperature according to various embodiments. Figure 4B Illustrates a graph of the contact area (mm Figures 3A to 3E ) of the 2 seal within a sealed component over time (h) at ambient temperature according to various embodiments. As Figures 4A to 4B shown, Figure 3D , Figure 3E and the seals of the embodiments herein exhibit greater contact force and contact area than previous iterations as well as the original design and conventional seals.

[0067] Figure 5A Illustrates a graph of the contact force (N) of the Figures 3A to 3E seal within a sealed component over time (h) at ambient temperature according to various embodiments. Figure 5B Illustrates a graph of the contact area (mm Figures 3A to 3E ) of the 2 seal within a sealed component over time (h) at ambient temperature according to various embodiments. As Figures 5A to 5B shown, Figure 3D , Figure 3E and the seals of the embodiments herein exhibit greater contact force and contact area than previous iterations as well as the original design and conventional seals. As Figures 4A to 5B shown, the seal designs according to the embodiments herein are optimized to provide optimal contact force and contact area when placed within a sealed component and provide unexpected results in terms of contact force and contact area, as the seal exhibits stronger performance in terms of contact area and contact force as the angle α, heel length L H , width W FL of the first lip, and the cavity profile are modified along the iteration.

[0068] Many different aspects and embodiments are possible. Some of those aspects and embodiments are described below. After reading this specification, one skilled in the art will understand that those aspects and embodiments are merely illustrative and do not limit the scope of the invention. Embodiments may be based on any one or more of the items listed below.

[0069] Embodiment 1. A seal, the seal comprising: an annular jacket, the annular jacket comprising a body, the body comprising a heel, a first lip and a second lip, the heel, the first lip and the second lip defining an annular recess oriented downwardly along a central axis, wherein the first lip is substantially parallel to the central axis, wherein the second lip comprises an angled portion adjacent the heel and a planar portion adjacent the angled portion, wherein the angled portion forms an angle α with a line perpendicular to the central axis, wherein α is between 30° and 90°, and wherein the heel has an axial length L H , wherein the first lip has an axial length L FL , and wherein L H ≤ 3L FL .

[0070] Embodiment 2. A seal assembly, comprising: a first member; a second member; and a seal disposed between the first member and the second member, the seal comprising: an annular jacket, the annular jacket comprising a body, the body comprising a heel, a first lip and a second lip, the heel, the first lip and the second lip defining an annular recess oriented downwardly along a central axis, wherein the first lip is substantially parallel to the central axis, wherein the heel is adapted to deform downwardly along the central axis to form an angle β with a line perpendicular to the central axis, and wherein β is greater than 3°.

[0071] Embodiment 3. A seal assembly, comprising: a first member; a second member; and a seal disposed between the first member and the second member, the seal comprising: an annular jacket, the annular jacket comprising a body, the body comprising a heel, a static first lip and a dynamic second lip, the heel, the static first lip and the dynamic second lip defining an annular recess oriented downwardly along a central axis, wherein the first lip is substantially parallel to the central axis, wherein the contact force of the second lip against the moving shaft measured after completion of Test 1 is in the range between about 1 N / mm and about 25 N / mm, and wherein the wear length on the second lip measured after completion of Test 1 is greater than about 0.1 mm and less than about 2.5 mm.

[0072] Embodiment 4. The seal assembly according to any one of Embodiments 1 to 2, wherein the first lip is a static lip.

[0073] Embodiment 5. The sealing assembly according to any one of Embodiments 1 to 2, wherein the second lip is a dynamic lip.

[0074] Embodiment 6. The seal according to Embodiment 1, wherein the first lip has an axial width W between 0.1 mm and 30 mm FL .

[0075] Embodiment 7. The seal according to Embodiment 1, wherein the second lip has an axial width W between 0.1 mm and 30 mm SL .

[0076] Embodiment 8. The seal according to Embodiment 1, wherein the heel has an axial length L between 0.1 mm and 300 mm H .

[0077] Embodiment 9. The seal according to Embodiment 1, wherein the first lip has an axial length L between 0.1 mm and 300 mm FL .

[0078] Embodiment 10. The seal according to Embodiment 1, wherein the second lip has an axial length L between 0.1 mm and 300 mm SL .

[0079] Embodiment 11. The seal according to Embodiment 1, wherein the entire second lip is straight.

[0080] Embodiment 12. The sealing assembly according to any one of Embodiments 2 to 3, wherein the first lip has a contact area CA between 0.01 mm 2 and 3000 mm 2 therebetween. FL .

[0081] Embodiment 13. The sealing assembly according to any one of Embodiments 2 to 3, wherein the second lip has a contact area CA between 0.01 mm 2 and 3000 mm 2 therebetween. SL .

[0082] Embodiment 14. The sealing assembly according to any one of Embodiments 2 to 3, wherein the seal provides an outward biasing contact force F between 1 N / mm and 25 N / mm S .

[0083] Embodiment 15. The seal or seal assembly according to any one of the foregoing embodiments, wherein the cavity has a radius of curvature RC between -200 mm and 200 mm C .

[0084] Embodiment 16. The seal assembly according to any one of Embodiments 2 to 3, wherein the second lip is deformed to include an arcuate outer surface.

[0085] Embodiment 17. The seal or seal assembly according to any one of the foregoing embodiments, wherein the first lip includes a straight portion and an arcuate end portion adjacent to the straight portion.

[0086] Embodiment 18. The seal or seal assembly according to any one of the foregoing embodiments, wherein the first lip is located outside the second lip.

[0087] Embodiment 19. The seal or seal assembly according to any one of the foregoing embodiments, wherein the seal does not include an energizer.

[0088] Embodiment 20. The seal or seal assembly according to any one of the foregoing embodiments, wherein the jacket comprises a polymer.

[0089] Embodiment 21. The seal or seal assembly according to any one of the foregoing embodiments, wherein the jacket comprises polyethylene and polyether ketone.

[0090] Embodiment 22. The seal or seal assembly according to any one of the foregoing embodiments, wherein the seal has a length between 0.1 mm and 600 mm.

[0091] Embodiment 23. The seal or seal assembly according to any one of the foregoing embodiments, wherein the seal has a width between 0.1 mm and 600 mm.

[0092] Note that not all of the features described above are required, a portion of a particular feature may not be required, and one or more features in addition to those described may also be provided. Further, the order in which the features are described is not necessarily the order in which the features are installed.

[0093] For clarity, certain features described herein in the context of separate embodiments may also be provided in combination in a single embodiment. Conversely, the various features described in the context of a single embodiment for brevity may also be provided separately or in any sub-combination.

[0094] Benefits, other advantages, and solutions to problems have been described above with regard to specific embodiments. However, the benefits, advantages, solutions to problems, and any feature that may cause any benefit, advantage, or solution to occur or become more pronounced should not be construed as a critical, required, or essential feature of any or all claims.

[0095] The description and illustrations of the embodiments described herein are intended to provide a general understanding of the structure of the various embodiments. The description and illustrations are not intended to be an exhaustive and comprehensive description of all elements and features of the devices and systems using the structures or methods described herein. Separate embodiments may also be provided combinatorially in a single embodiment, and conversely, the various features described in the context of a single embodiment for the sake of brevity may also be provided separately or in any sub-combination. Additionally, references to values stated in ranges include each value within that range. Many other embodiments may be apparent to those skilled in the art only after reading this specification. Other embodiments may be used and derived from this disclosure, such that structural substitutions, logical substitutions, or any changes may be made without departing from the scope of this disclosure. Accordingly, this disclosure should be regarded as illustrative rather than restrictive.

Claims

1. A seal, comprising: Annular jacket, the annular jacket includes a body, the body includes a heel, a first lip and a second lip, the heel, the first lip and the second lip define an annular recess oriented downward along a central axis, wherein the first lip is substantially parallel to the central axis, wherein the second lip includes an angled portion adjacent to the heel and a planar portion adjacent to the angled portion, wherein the angled portion forms an angle α with a line perpendicular to the central axis, wherein α is between 30° and 90°, and wherein the heel has an axial length L H , wherein the first lip has an axial length L FL , and wherein L H ≤3L FL 。 2. A seal assembly, comprising: A first member; A second member; And A seal disposed between the first member and the second member, the seal comprising: An annular jacket including a body having a heel, a first lip, and a second lip, the heel, the first lip, and the second lip defining an annular recess oriented downwardly along a central axis, wherein the first lip is substantially parallel to the central axis, wherein the heel is adapted to deform downwardly along the central axis to form an angle β with a line perpendicular to the central axis, where β is greater than 3°.

3. A seal assembly, comprising: A first member; A second member; And A seal disposed between the first member and the second member, the seal comprising: An annular jacket including a body having a heel, a static first lip, and a dynamic second lip, the heel, the static first lip, and the dynamic second lip defining an annular recess oriented downwardly along a central axis, wherein the first lip is substantially parallel to the central axis, wherein the contact force of the second lip against the moving shaft measured after completion of Test 1 is in the range between about 1 N / mm and about 25 N / mm, and wherein the wear length on the second lip measured after completion of Test 1 is greater than about 0.1 mm and less than about 2.5 mm.

4. The seal assembly according to any one of claims 2 to 3, wherein the first lip is a static lip.

5. The seal assembly according to any one of claims 2 to 3, wherein the second lip is a dynamic lip.

6. The seal according to claim 1, wherein the first lip has an axial width W between 0.1 mm and 30 mm FL .

7. The seal according to claim 1, wherein the second lip has an axial width W between 0.1 mm and 30 mm SL .

8. The seal according to claim 1, wherein the heel has an axial length L between 0.1 mm and 300 mm H .

9. The seal according to claim 1, wherein the first lip has an axial length L between 0.1 mm and 300 mm FL .

10. The seal according to claim 1, wherein the second lip has an axial length L between 0.1 mm and 300 mm SL .

11. The seal according to claim 1, wherein the entire second lip is straight.

12. The sealing assembly according to any one of claims 2 to 3, wherein the first lip has a contact area CA between 0.01 mm 2 and 3000 mm 2 therebetween FL .

13. The sealing assembly according to any one of claims 2 to 3, wherein the second lip has a contact area CA between 0.01 mm 2 and 3000 mm 2 therebetween SL .

14. The seal assembly according to any one of claims 2 to 3, wherein the second lip is deformed to include an arcuate outer surface.

15. The seal or seal assembly according to any one of claims 1 to 3, wherein the first lip includes a straight portion and an arcuate end portion adjacent to the straight portion.

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